Commit 28d59363 authored by Steve French's avatar Steve French
Browse files

smb3: add tracepoints for smb2/smb3 open 



add two tracepoints for open completion. One for error one for completion (open_done).
Sample output below

            TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
               | |       |   ||||       |         |
            bash-15348 [007] .... 42441.027492: smb3_enter: 	cifs_lookup: xid=45
            bash-15348 [007] .... 42441.028214: smb3_cmd_err: 	sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=105 status=0xc0000034 rc=-2
            bash-15348 [007] .... 42441.028219: smb3_open_err: xid=45 sid=0x6173e4ce tid=0xa05150e6 cr_opts=0x0 des_access=0x80 rc=-2
            bash-15348 [007] .... 42441.028225: smb3_exit_done: 	cifs_lookup: xid=45
          fop777-24560 [002] .... 42442.627617: smb3_enter: 	cifs_revalidate_dentry_attr: xid=46
          fop777-24560 [003] .... 42442.628301: smb3_cmd_err: 	sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=106 status=0xc0000034 rc=-2
          fop777-24560 [003] .... 42442.628319: smb3_open_err: xid=46 sid=0x6173e4ce tid=0xa05150e6 cr_opts=0x0 des_access=0x80 rc=-2
          fop777-24560 [003] .... 42442.628335: smb3_enter: 	cifs_atomic_open: xid=47
          fop777-24560 [003] .... 42442.629587: smb3_cmd_done: 	sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=107
          fop777-24560 [003] .... 42442.629592: smb3_open_done: xid=47 sid=0x6173e4ce tid=0xa05150e6 fid=0xb8a0984d cr_opts=0x40 des_access=0x40000080

Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 5c5a41be

fs/cifs/smb2pdu.c

+6 −1
Original line number Diff line number Diff line
@@ -1975,8 +1975,13 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, 
			resp_buftype = CIFS_NO_BUFFER;

			rsp = NULL;

		}

		trace_smb3_open_err(xid, tcon->tid, ses->Suid,

				    oparms->create_options, oparms->desired_access, rc);

		goto creat_exit;

	}

	} else

		trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid,

				     ses->Suid, oparms->create_options,

				     oparms->desired_access);



	oparms->fid->persistent_fid = rsp->PersistentFileId;

	oparms->fid->volatile_fid = rsp->VolatileFileId;

fs/cifs/trace.h

+86 −0
Original line number Diff line number Diff line
@@ -335,6 +335,92 @@ DEFINE_EVENT(smb3_enter_exit_class, smb3_##name, \ 
DEFINE_SMB3_ENTER_EXIT_EVENT(enter);

DEFINE_SMB3_ENTER_EXIT_EVENT(exit_done);



/*

 * For smb2/smb3 open call

 */

DECLARE_EVENT_CLASS(smb3_open_err_class,

	TP_PROTO(unsigned int xid,

		__u32	tid,

		__u64	sesid,

		int	create_options,

		int	desired_access,

		int	rc),

	TP_ARGS(xid, tid, sesid, create_options, desired_access, rc),

	TP_STRUCT__entry(

		__field(unsigned int, xid)

		__field(__u32, tid)

		__field(__u64, sesid)

		__field(int,   create_options)

		__field(int, desired_access)

		__field(int, rc)

	),

	TP_fast_assign(

		__entry->xid = xid;

		__entry->tid = tid;

		__entry->sesid = sesid;

		__entry->create_options = create_options;

		__entry->desired_access = desired_access;

		__entry->rc = rc;

	),

	TP_printk("xid=%u sid=0x%llx tid=0x%x cr_opts=0x%x des_access=0x%x rc=%d",

		__entry->xid, __entry->sesid, __entry->tid,

		__entry->create_options, __entry->desired_access, __entry->rc)

)



#define DEFINE_SMB3_OPEN_ERR_EVENT(name)          \

DEFINE_EVENT(smb3_open_err_class, smb3_##name,    \

	TP_PROTO(unsigned int xid,		\

		__u32	tid,			\

		__u64	sesid,			\

		int	create_options,		\

		int	desired_access,		\

		int	rc),			\

	TP_ARGS(xid, tid, sesid, create_options, desired_access, rc))



DEFINE_SMB3_OPEN_ERR_EVENT(open_err);





DECLARE_EVENT_CLASS(smb3_open_done_class,

	TP_PROTO(unsigned int xid,

		__u64	fid,

		__u32	tid,

		__u64	sesid,

		int	create_options,

		int	desired_access),

	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access),

	TP_STRUCT__entry(

		__field(unsigned int, xid)

		__field(__u64, fid)

		__field(__u32, tid)

		__field(__u64, sesid)

		__field(int, create_options)

		__field(int, desired_access)

	),

	TP_fast_assign(

		__entry->xid = xid;

		__entry->fid = fid;

		__entry->tid = tid;

		__entry->sesid = sesid;

		__entry->create_options = create_options;

		__entry->desired_access = desired_access;

	),

	TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx cr_opts=0x%x des_access=0x%x",

		__entry->xid, __entry->sesid, __entry->tid, __entry->fid,

		__entry->create_options, __entry->desired_access)

)



#define DEFINE_SMB3_OPEN_DONE_EVENT(name)        \

DEFINE_EVENT(smb3_open_done_class, smb3_##name,  \

	TP_PROTO(unsigned int xid,		\

		__u64	fid,			\

		__u32	tid,			\

		__u64	sesid,			\

		int	create_options,		\

		int	desired_access),	\

	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access))



DEFINE_SMB3_OPEN_DONE_EVENT(open_done);



#endif /* _CIFS_TRACE_H */



#undef TRACE_INCLUDE_PATH

CRA Git | Maintained and supported by SUSTech CRA and CCSE